// Check three values to see if they are the same. If so, we have a winner.
bool tic_tac_toe_row(char chOne, char chTwo, char chThree) {
    if ((chOne == chTwo) && (chOne == chThree)) {
        return true;
    }
    return false;
}

// Check board for a win by looping through rows, columns and checking diagonals.
// If any of them are true, then there is a winning condition.

bool tic_tac_toe_win(char grid[][3]) {
    // Loop through the rows
    for (int i = 0; i < 3; i++) {
        if (tic_tac_toe_row(grid[i][0], grid[i][1], grid[i][2])) {
            return true;
        }
    }

    // Loop through the columns
    for (int i = 0; i < 3; i++) {
        if (tic_tac_toe_row(grid[0][i], grid[1][i], grid[2][i])) {
            return true;
        }
    }

    // Check diagonals
    if (tic_tac_toe_row(grid[0][0], grid[1][1], grid[2][2])) {
        return true;
    }

    if (tic_tac_toe_row(grid[0][2], grid[1][1], grid[2][0])) {
        return true;
    }

    return false;
}

Posted: March 20, 2023

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